Package: g++-4.1
Version: 4.1.1-21
Severity: normal
Hi,
I work without execptions and want to ensure that error codes that
might be returned by functions will not be ignored. So I added the
attribute warn_unused_result to the function prototype. But with
functions returning an union the attribute is ignored:
------------------------[ foo.c / foo.cc ]----------------------------
union Error { int error; void* val; };
Error foo(void) __attribute__ ((warn_unused_result));
int bar(void) __attribute__ ((warn_unused_result));
void baz(void) { foo(); bar(); }
----------------------------------------------------------------------
% g++ -W -Wall -O2 -c foo.cc
foo.cc: In function 'void baz()':
foo.cc:4: warning: ignoring return value of 'int bar()', declared with
attribute warn_unused_result
----------------------------------------------------------------------
% gcc -W -Wall -O2 -c foo.c
foo.c: In function 'baz':
foo.c:4: warning: ignoring return value of 'foo', declared with attribute
warn_unused_result
foo.c:4: warning: ignoring return value of 'bar', declared with attribute
warn_unused_result
----------------------------------------------------------------------
MfG
Goswin
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Versions of packages g++-4.1 depends on:
ii gcc-4.1 4.1.1-21 The GNU C compiler
ii gcc-4.1-base 4.1.1-21 The GNU Compiler Collection (base
ii libc6 2.3.6.ds1-13 GNU C Library: Shared libraries
ii libstdc++6-4.1-dev 4.1.1-21 The GNU Standard C++ Library v3 (d
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